Apparatus and method for scanning food bars with movable scanning unit

1. A scanning apparatus for scanning food bars for a food processing system, the scanning apparatus comprising:

a conveyor assembly for conveying a food bar in a longitudinal direction; and

a scanning unit which is adapted to record an outer shape and/or inner shape of the food bar;

wherein the scanning unit is movable at least along the longitudinal direction; and

a protective housing with an interior in which the food bar is arrangeable during the scanning process, wherein a length of the interior of the protective housing in the longitudinal direction is shorter than twice a length of the food bar.

2. The scanning apparatus according to claim 1 , wherein the scanning unit comprises a radiation source which is adapted to irradiate the food bar.

3. The scanning apparatus according to claim 1 , wherein the conveyor assembly comprises a circulating conveying device having an upper support area and a lower return area, and the scanning unit comprises a detector unit provided between the upper support area and the lower return area.

4. The scanning apparatus according to claim 1 , wherein the conveyor assembly comprises a circulating conveying device, and wherein a belt gap defined by deflection rollers and movable in the longitudinal direction is provided in an upper support area of the conveyor assembly.

5. The scanning apparatus according to claim 4 , wherein the deflection rollers are mechanically coupled in the longitudinal direction by a coupling to ensure a constant length of the belt gap, and wherein the coupling comprises the scanning unit.

6. The scanning apparatus according to claim 1 , wherein the conveyor assembly comprises two conveying devices that each include a retraction belt and a deflection roller, and wherein the deflection rollers are movable in the longitudinal direction and define a belt gap that is movable in the longitudinal direction.

7. The scanning apparatus according to claim 1 , wherein the conveyor assembly comprises a plurality of parallel conveying lanes.

8. The scanning apparatus according to claim 7 , wherein the scanning unit is movable between the plurality of parallel conveying lanes in a transverse direction.

9. The scanning apparatus according to claim 7 , wherein a scanning unit movable in the longitudinal direction is provided for each of the plurality of parallel conveying lanes or for each of a plurality of subgroups of the plurality of parallel conveying lanes.

10. The scanning apparatus according to claim 7 , wherein the plurality of parallel conveying lanes are operable independently of each other.

11. The scanning apparatus according to claim 1 , further comprising a controller configured to actuate a drive for the conveyor assembly, a drive for the scanning unit, or a drive for positioning the belt gap.

12. A method for scanning food bars, the method comprising:

conveying a food bar in a longitudinal direction using a conveyor assembly;

scanning the food bar using a scanning unit; and

moving the scanning unit along the food bar in the longitudinal direction during the scanning;

wherein conveying the food bar comprises moving the food bar into a protective housing, and wherein the scanning unit is moved only within the protective housing.

13. The method according to claim 12 , wherein the scanning unit is moved along an entire length of the food bar during the scanning.

14. The method according to claim 12 , wherein conveying the food bar is interrupted during the scanning.

15. The method according to claim 12 , wherein food bars are conveyed in multiple parallel lanes, and wherein the scanning unit is operated to scan the food bars and is moved between the lanes in a transverse direction in-between scanning processes.

16. The method according to claim 12 , wherein the scanning unit is moved in respective opposite directions for successive scanning processes.

17. The method according to claim 12 , wherein the food bar is irradiated during scanning, and a result of the scanning is corrected using reference data determined in a scanning process without the food bar.

18. The method according to claim 12 , wherein the scanning unit during scanning is moved together with a belt gap of the conveyor assembly, and scanning is performed within the belt gap.

19. A scanning apparatus for scanning food bars for a food processing system, the scanning apparatus comprising:

a conveyor assembly for conveying a food bar in a longitudinal direction; and

a scanning unit which is adapted to record an outer shape and/or inner shape of the food bar;

wherein the scanning unit is movable at least along the longitudinal direction, and the conveyor assembly comprises a circulating conveying device, wherein a belt gap defined by deflection rollers and movable in the longitudinal direction is provided in an upper support area of the conveyor assembly.

20. A scanning apparatus for scanning food bars for a food processing system, the scanning apparatus comprising:

a conveyor assembly for conveying a food bar in a longitudinal direction; and

a scanning unit which is adapted to record an outer shape and/or inner shape of the food bar;

wherein the scanning unit is movable at least along the longitudinal direction;

wherein the conveyor assembly comprises two conveying devices that each include a retraction belt and a deflection roller, and wherein the deflection rollers are movable in the longitudinal direction and define a belt gap that is movable in the longitudinal direction.

21. A method for scanning food bars, the method comprising:

conveying a food bar in a longitudinal direction using a conveyor assembly;

scanning the food bar using a scanning unit; and

moving the scanning unit along the food bar in the longitudinal direction during the scanning;

wherein the scanning unit during scanning is moved together with a belt gap of the conveyor assembly, and scanning is performed within the belt gap.